Thinking of accessible no-code application needs a robust drag and drop library not just capable of dragging and repositioning the DOM element but also comes with high performance. So I made DFlex (https://github.com/dflex-js/dflex) where the DOM tree stays untouched, with the same order but the elements change their positions with CSS transform only. That's done without changing the element position to Fixed or absolute. I've added some features recently to handle huge numbers of rows up to 1k elements but still, there's so much to do.